1741 - MachXO2: I don't see Differential 3.3v CMOS inputs (LVCMOS33D) input characteristics in the MachXO2 Data Sheet.What are its specifications?
The LVCMOS33D buffer characteristics are similar to those of the LVDS33 differential input buffer, with these key differences:
- Vinp/Vinm = 0v min, 3.4v max, 3.3v typ
- Vcm = 2.6v max, 1.65v typ
- Fmax = 136MHz
Note: The 100ohm internal termination resistor is not available for this input configuration. It is available only for the LVDS input type.
Related Articles
6161 - iCE40 UltraPlus: How utilize Differential Input pairs on an iCE40 device?
For iCEcube2 compatible devices (LP/HX/LM/Ultra/UltraLite/UltraPlus), the user needs to use the SB_IO primitive and override the IO_STANDARD parameter to SB_LVDS_INPUT as shown in the rudimentary example below: SB_IO SB_IO_inst ( ...
2516 - MachXO:
What is the meaning of "I/O Tristate Voltage Applied" and "Dedicated Input Voltage Applied" specified in the Absolute Maximum Ratings section of MachXO data sheet?
Solution: There are two cases where an IO pad is driven by an external source. One is the case of a dedicated input pad, and the other is a bi-directional IO pad in which its output can be tri-stated. The "Dedicated Input Voltage Applied" and "I/O ...
5518 - How to instantiate differential inputs in VHDL?
For differential inputs, users can refer to the example below: COMPONENT SB_IO IS GENERIC( PIN_TYPE : std_logic_vector(5 downto 0) := "000000"; IO_STANDARD: string := "SB_LVDS_INPUT" ); PORT( PACKAGE_PIN : in std_logic; LATCH_INPUT_VALUE : in ...
5706 - MachXO2/XO3/XO3D: If the input voltage for input pins is over 3.6V or under -0.3V, will there be any problem?
The input signal of more than 3.6 but not greater than (VIHmax + 2 v ) and under -2 v is permitted. However, it should be around 20 ns only; otherwise, the device will be damaged. Please refer to the Device Data Sheet and look for DC and Switching ...
4657 - ECP2, ECP3, ECP5, MachXO, MachXO2, MachXO3: What is the permitted maximum undershoot/overshoot voltage of a particular device?
Description: Undershoot and overshoot of -2 V to (Vihmax +2) V is permitted for a duration of less than 20 ns. This applies to the following device families: ECP2, ECP3, ECP5, MachXO, MachXO2, MachXO3. For more information, refer to the Absolute ...